Mechanism for regulating the point of ignition in magneto-electric ignition apparatus



HURUMANIN MESHANISM FOR REGULATING 'YHE PNT 0F GNITON iN MAGNE T0 ELECTRIC GNITON APPARATUS. APPLICAUQN FILED MAR. 23, 1918.

Patented Aug. 10, 1920.

ATTORNEY UNi'rED s'mxres ERNST HURLIMANN, OF ZUCHIL, 'NEAR SOLOTHURN, SWTZEI/LgiND, ASSXGNOB T0 THE FIRM SCNTLLA., OFVSOLOTHURN, SWTZERLAND.

'mammie Foe REGULATING THE Poma* minnen MAGNETS-ELECTRIC Iii-minori .Amanmroa If on A L cation.

i U SFA tion diviflel to the basi principi' Acco?. i; 'to one Win01 aeeoifiing opeate. entire iron ,itei'iiiptef This has finit ti" niost In wfo'e phase ce; always e it hee the rient drawback that n, considembie must be Left available for the rotation of the yoke corresponding to the maximum angie of regu'ietion o the' point o?? Q 'in that the dimensions oi the apparues are eoitsiembiy increased wie if yed m im? veggiamtmg' n in tv iiS-tnat ne tiptel is the t difeent p the ignr tempiei. apparatus this ,mi i the advent ze of ze-:nifin n A Spee-e? out is iimitefi om eteimined point of adjustment onw'a'd the-eument curve is ne l ine im* the ignitionv l The pi'esent invention has now 'for its 0i?- jeet to prow oe an improve@ sneehenism which combinee the 'advantages of both kinds o Te finition oi" the point of' ignition, wiiiie 'ai/"owing their sizmbeeits;

iwf-turisti@ feature the present in this; the yoke anti e ndlpte to be ntem'upt Specification ci Letters Eaten/t. Pagnud Au@ 10,1920.

man

ce) but only to such an y necessitated in respect the current curve., whiie the e* of the shape o otheiw potion e roguiation of the Point of ignition is eifec'ed ,by shifting the. interto the vom.

tee present invention o; cxampie 'in the actne intermetemuptei Z7 and of eoi rif., extreme interruptei and yoke infection being shown f3 shows the midie position of the inte 'nu Y no yoke nxtiiesit yposition of the een oe reached by its disl. Side? the yoke c beingI die-A l, by tile eff/2, :1 "l i the intery to the yoke additionally ,so that in this direction a i t-etal. dispiacement'o the interrupt@ by the angie a/Q--vu is reached'. n this figure the spring e is Shown compressed te its greatest extent.

F' f. 4 shows the extreme 'position of inteiiupteif L "i yoke when. Inoveciin the op ios'te iii e 'i Tne eonetzuotion of the meel'm'nism 'con- Siete eesentiziiiy in the feature than it can be (iisp-ueeif e wiioie in both directions, with the eid of n nnunmily opemtefi lever @fitted We interruptor; (n the iever a being rotated in one direction n mo'ection cnr-l ries; aiong with :i Stop ,f' fixed to the yoke :1t the point )i i Cheli to the yoke c. On its i'ontion in the opposite direction vthe proiection f on the intemuptexl earri with it e stop -in one with the yoke 0, which latter contacts witnA Stops f/ on the casing.

But the interriaptei' ie further displacedl autonmticeily inthe same direfrtion by reason of a further Compression of the spring C taking piacebetween the projection f on the intexi'uptei 2 and the Stop if] on the frame, yi'itiiont the yoke f? taking part in this further Foti 'l-"iie op .irakien of the mechanism is effected 'he 'foin 'ing manne1fr2- eioeix e rotation of the 'izmii iever a, the interrupt@ 'whit-ig, ie :'otatebie around the exis tile apparatus, een be shifted er with the yoireio that ce Ties the f from the mid position shown o hoth sides throng-li the angle e ps .on the casing g i; the apparatus in a counter-clockwise direction it is not possihie to retest-e the lever e eny' further, but it is possihie --to rotete the interrupter o through; e 'further ongle el in a clockwise direction, the yoire c remaining stationery in this movement a compression oit the spring e which is located between Astop ,t on the interrupter casing.; g end a stop it fixed to the yoke c. ln ro- 'ta-ting noch the lever a from this position, the spring' e is unstressed and irst the interrnpter isshiited through the angle ci 'relatively to the yoke, until the stop y' on the interruptor meets the stop h which is likewise tired to the yoke c. By this means on further rotation of thelever a, the yoke 4e cerried around with it and rotated past the mid position (Fig. 2) as for as the stop gl el) on 'the opposite side.

dthis invention thus allows of regulating the time of ignition to on extent which,

owing to the non-symmetry of the current` curve, extends through an ongle or' e/Q to one side of the mid position shown in Fig.

2, end through en ongle oi /Q-W, on the other side ot' the seid midposition, that is to eey, through e totai angle ot os-i-a. A. shitting oil the yoke end consequent increase in the dimensions of the apparatus is then ecessitetedpnly as required hy the angle oi.

intense rthe remainin )oi-tion a of the envie of regulation is dealt with by the automatic shifting of the interruptor relatively to the yoke without thereby ceusing the point of ignition to come within unfavorable phases et the current.

What l claim imm l. ln mechanism for regulating the point of ignition in me neto electric apparatus a construction in W igich a circular hand operated interruptor niemher is provided with a projection on the iperiphery thereof?, said projection erigegingovith a recess in a yoke concentrically mounted in the same plone as such interruptor member, a spring located in said recess which permits lthe interrupter to be moi/ed through a further angle, which movement allows of regulating the time of ignition toI the extent required, substen; tieliy as shown and described.

2. ln mechanism for' regulating the point of ienition in magneto electric apparatus the lcom ination oi parts for effecting the fea-l ture as claimed comprising a hand operated interruptor member with a projection formied thereon and a yoke piece for carrying a coil attached thereto, a concentric segmental ring provided with a recess which forms e stop or said projection and a Aspring in seid recess adapted tofallow a differential movement between the adjacent ports, substantially es shown and described.

ln testimony whereof l have signed my',

name to this specification.

n. nnnnniiamt. 

